Abstract: In this note we give a characterisation of the Jacobson radical of a Jordan triple system in terms of principal inner ideals. If is a Jordan triple system and the Jacobson radical of then iff for all . We use this to give a new characterisation of von Neumann regular Jordan triple systems. In particular, this gives another most elementary and short proof that semi-simple Jordan triple systems with dcc on principal inner ideals are von Neumann regular.